نتایج جستجو برای: aging time
تعداد نتایج: 1980703 فیلتر نتایج به سال:
In Biodemography, aging is typically measured and compared based on aging rates. We argue that this approach may be misleading, because it confounds the time aspect with the mere change aspect of aging. To disentangle these aspects, here we utilize a time-standardized framework and, instead of aging rates, suggest the shape of aging as a novel and valuable alternative concept for comparative ag...
In this research, zeolite Na-Y was synthesized from Kaolin without an organic template under the non-hydrothermal condition to adsorb sulfur compound. Model fuel desulfurization was optimized by employing the Box-Behnken experimental design with 2 center points, the three parameters, and one response value. The objective was to find how sorption capacity is related to alkali fusion temperat...
objective: oxidative stress as a consequence of aging can induce infertility in males. in this study, we have investigated the effects of aging on sperm parameters, intra-spermatic water soluble antioxidants, reactive oxygen species (ros), and in vitro blastocyst formation. methods: we chose 5 older nmri male mice (10-12 months) and 5 younger nmri male mice (2-3 months). sperm parameters, ros, ...
چکیده ندارد.
background the use of long-term care services has risen and this trend is expected to continue as the population reaches old age. objectives this study was performed to assess the caring conditions in nursing homes. patients and methods this study was conducted with a qualitative approach using conventional qualitative content analysis. the study was conducted on 23 iranian participants includi...
vitamin d deficiency is the most under-diagnosed medical condition in postmenopausal women. there are few epidemiologic studies on vitamin d status of postmenopausal women in iran. this study aimed to investigate the 25-hydroxyvitamin d levels in postmenopausal women living in tehran, capital of iran. in this cross sectional study, 110 women were selected via convenience sampling method from me...
the immune system of mammalian organisms undergoes alterations that may account for an increased susceptibility to certain infections, autoimmune diseases, or malignancies. well characterized are age related defect in t cell functions and cell mediated immunity. although it is well established that the functional properties of t cells decrease with age, its biochemical and molecular nature is p...
age related skin disorders due to structural and functional changes in the skin of the elderly may increase health care costs. as a result of an increase in the number of aging population in iran, provision of dermatology services to the elderly group due to the limitation of resources and the high cost of those services will be a challenge for the health care system. moreover, by increasing th...
conclusions regular aerobic exercise could increase plasma klotho levels, and this could be an explanation for exercise-related anti-aging effects. background klotho is an anti-aging protein that is predominantly secreted by the kidneys. objectives the aim of the study was to measure and compare the circulating klotho levels in the serum of trained athletes and in healthy, non-athlete controls....
The effect of the milling time & ageing on the hardness, density, and wear characteristics of Al 7150 alloy specimens made via powder metallurgy has been studied. The different constituents of Al 7150 alloy were processed in a planetary ball milling set up with a BPR of 10:1 for 5 hours, 10 hours, and 20 hours. At 400 °C, the milled powders were subsequently hot compacted in a punch die setup. ...
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